Hi,
Thank you for your input. We do investigate all bug reports submitted to us, however some of them correspond to very specific cases (or simply cannot be reproduced on our side), so we are unable to pinpoint and fix them without further details and follow-ups.
W.r.t. the 10-line bug, according to our records, the support ticket describing it was submitted on 10/09/2017 9:41 am and we sent you a hotfix on 10/10/2017 5:30 pm. We understand that you might have been experiencing the problem for a long time prior to submitting a ticket, however we are not able to resolve rare issues unless they are actually reported via the forum or support form.
Regarding the deletion issue, we have tried reproducing it and measured roughly the same performance using the regular VS IntelliSense and VisualGDB Clang IntelliSense. We have requested further clarifications in this thread and have not heard from you since. Please feel free to post your findings there so that we could continue the investigation.